autoview – Maintain a ghostscript view of emacs buffer

While you are edit­ing your file.tex, au­toview will (run in a
sep­a­rate emacs and) con­tin­u­ally, in­tel­li­gently, and au­to­mat­i­cally
keep pro­cess­ing your LaTeX file, gen­er­ate a .ps file and gv (view)
the file for you.